We know that if a man dies believing in his false religion he goes to hell. A muslim, an unbelieving Jew, a buddhist, a protestant will all go to hell if he does not convert to the Catholic faith before he dies. Pope Eugene IV, Council of Florence, Bull Cantate Domino, 1441: “The most Holy Roman Catholic Church firmly believes, professes, and preaches that none of those existing outside the Catholic Church, not only pagans, but also Jews, heretics and schismatics, can have a share in life eternal; but that they will go into the eternal fire which was prepared for the devil and his angels, unless before death they are joined with Her; and that so important is the unity of this ecclesiastical body that only those remaining within this unity can receive an eternal recompense for their fasts, their almsgivings, their other works of Christian piety and the duties of a Christian soldier. No one, let his almsgiving be as great as it may, no one, even if he pour out his blood for the name of Christ, can be saved, unless he remain within the bosom and the unity of the Catholic Church.”
The Church dogmatically states that “unless before death they are joined with Her” very clear, who goes to hell.